Counterweight system



FIG. 1 is a perspective view of a counterweight system showing our new design.

FIG. 2 is another perspective view thereof.

FIG. 3 is a front view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.

The portions of the counterweight box shown in broken lines having unequal length segments illustrate boundaries of the claimed design and form no part of the claimed design. 

CLAIM We claim the ornamental design for a counterweight system, as shown and described. 